diff options
| author | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2011-05-05 01:23:57 +0900 |
|---|---|---|
| committer | Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2011-05-10 22:21:45 +0900 |
| commit | 619205da5b567504310daf829dede1187fa29bbc (patch) | |
| tree | cd672bb647ff22c711d93437fc53821852f27eba /include/linux | |
| parent | 56eb55388580ebd51f3bbd9af40ebb56849356af (diff) | |
nilfs2: add ioctl which limits range of segment to be allocated
This adds a new ioctl command which limits range of segment to be
allocated. This is intended to gather data whithin a range of the
partition before shrinking the filesystem, or to control new log
location for some purpose.
If a range is specified by the ioctl, segment allocator of nilfs tries
to allocate new segments from the range unless no free segments are
available there.
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/nilfs2_fs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h index bd8678f8a421..7454ad7451b4 100644 --- a/include/linux/nilfs2_fs.h +++ b/include/linux/nilfs2_fs.h @@ -845,5 +845,7 @@ struct nilfs_bdesc { _IOR(NILFS_IOCTL_IDENT, 0x8A, __u64) #define NILFS_IOCTL_RESIZE \ _IOW(NILFS_IOCTL_IDENT, 0x8B, __u64) +#define NILFS_IOCTL_SET_ALLOC_RANGE \ + _IOW(NILFS_IOCTL_IDENT, 0x8C, __u64[2]) #endif /* _LINUX_NILFS_FS_H */ |